In the following reactions, $$ZnO$$ is respectively acting as a/an:
$$\eqalign{
& \left( A \right)\,\,ZnO + N{a_2}O \to N{a_2}Zn{O_2} \cr
& \left( B \right)\,\,ZnO + C{O_2} \to ZnC{O_3} \cr} $$
A.
base and acid
B.
base and base
C.
acid and acid
D.
acid and base
Answer :
acid and base
Solution :
Although $$ZnO$$ is an amphoteric oxide but in given reaction.
$$\eqalign{
& \left( A \right)\,\mathop {ZnO}\limits_{acid} + \mathop {N{a_2}O}\limits_{base} \to \mathop {N{a_2}Zn{O_2}}\limits_{salt} \cr
& \left( B \right)\,\mathop {ZnO}\limits_{base} + \mathop {C{O_2}}\limits_{acid} \to \mathop {ZnC{O_3}}\limits_{salt} \cr} $$
Releted MCQ Question on Inorganic Chemistry >> D and F Block Elements
Releted Question 1
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is